Fulling Mill Olive Sculpin

The name is Northern Hemisphere, the job is not

Sculpins are not Australian fish, so take the name as a description of shape rather than a species: a broad flat head and a body built to sit hard on the bottom, which is where a big trout expects to find an easy meal. That profile works here on any water with a rocky or gravel bed. Fish it on a floating line or a streamer tip, get it down and keep it down, and vary the retrieve until something takes an interest. Best on the resident fish that have turned cannibal.